M7
SERIES
Thermal Printer Service Manua
l
40
40
5. TROUBLESHOOTING
5.1 Common Problems
The following guide lists the most common problems that might be encountered when operating
this bar code printer. If the printer still does not function after all suggested solutions have been
invoked, please contact the Customer Service Department of your purchased reseller or
distributor for assistance.
Problem
Possible Cause
Recovery Procedure
Power indicator does
not illuminate
* The power cord is not properly
connected.
* Plug the power cord in printer and outlet.
* Switch the printer on.
Carriage Open
* The printer carriage is open.
* Close the print carriage.
No Ribbon
* Ran out of ribbon.
* The ribbon is installed incorrectly.
* The ribbon sensor is not been well
calibrated.
* Supply a new ribbon roll.
* Refer to the user’s manual to reinstall
the ribbon.
No Paper
* Ran out of label.
* The label is installed incorrectly.
* Gap/black mark sensor is not
calibrated.
* Supply a new label roll.
* Refer to the user’s manual to reinstall the label
roll.
* Calibrate the gap/black mark sensor.
Paper Jam
* Gap/black mark sensor is not set
properly.
* Make sure label size is set properly.
* Labels may be stuck inside the printer
mechanism.
* Calibrate the gap/black mark sensor.
* Set label size correctly.
Take Label
* Peel function is enabled.
* If the peeler module is installed, remove the
label.
* If there is no peeler module in front of the printer,
turn off the printer and install it.
* Check if the connector is plugging correctly.
